Re: [CAD_CAM_EDM_DRO] Engraving Aluminum

Checkout www.brownells.com
What you'll be looking for is Brownells Teflon/Moly oven cure, gun finish.

It comes in black, gray, s/s gray, Dark park gray, earth brown and O.D.
green.
It bkaes on at 350 degrees in the oven. I thought they had white but it
doesn't look like it. Possibly you could use the s/s gray for the letters?

There is another similar product they have called Aluma-hyde II.

They also carry bake on laquers.

Smoke


-----Original Message-----
From: Rich D. <cmsteam@...>
To: CAD_CAM_EDM_DRO@yahoogroups.com <CAD_CAM_EDM_DRO@yahoogroups.com>
Date: Saturday, September 01, 2001 8:10 PM
Subject: Re: [CAD_CAM_EDM_DRO] Engraving Aluminum

>
>
>Smoke,
>Do you have a brand name and source for this bake on epoxy.
>I'm a panel engraver too.
>RichD
>
>>
>> If your panels aren't too big...ie, they'll fit in the kitchen oven...you
>> can use some gunsmith tips and save trips to the anodizer. After you
>> engrave the letters, sand/polish the panel spray it with bake on
>> epoxy...available in several colors.
>> After baking the first color, spray on white color over the letters and

wipe

>> off the excess (do a neat job of wiping off) and bake it agian. Viola,

your

>> done without even one trip for anodizing.
>>
>> Smoke
>>
>> >> The problem with unanodized aluminum, even 6061-T6
>> >> is that is is still pretty soft, and will scratch easily. That's
>> >> why most professional outfits anodize the panels, so that
>> >> they will resist scratching from pens, rings and such stuff
>> >> that people have in their hands when pushing buttons.
>> >>
>> >> Jon
>> >>
>> >
>> >Jon,
>> >
>> >Thanks, That's what I've used before, just wondering
>> >if there was anything better.
>> >
>> >I've done a few panels before and found that the easiest
>> >way to do it is to engrave the panel, bring it to the anodizers
>> >and have them clean/etch it. Bring it home and paint the
>> >letters with epoxy paint. Don't worry about getting the paint
>> >on the unengraved part of the panel. Allow ample drying time
>> >and then sand the panel with a random orbital sander. This
>> >leaves the paint only in the engraved area. Bring it back to
>> >the anodizer and have them clean and anodize. The epoxy
>> >paint holds up to the cleaning/etching/anodizing process and
>> >makes for a real nice job. If using white paint on a black
>> >anodized finish make certain that you sand well and then
>> >sand some more. White paint on bare aluminum is tough
>> >to see, that is, until the anodizer dyes it black. Then it requires
>> >a redo, I know, Ive done it.
>> >
>> >Trying to paint the letters after anodizing is not the way to go.
>> >Getting the excess paint off using some sort of solvent will
>> >discolor the finish. Especially white paint off a black finish.
>> >Even water based paint will soak in when trying to remove it.
>> >I've done that too.
>> >
>> >Bill
>> >
>> >
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